To further verify that PDGFR-α and PDGFR–β were involved in tumorigenesis of NSCLC cells, miR-34a and -34c were transfected in Calu-6 cells alone or in combination with a plasmid overexpressing only the coding sequence and not the 3’ UTR of PDGFR-α and PDGFR-β. This evidence concerns the gene PDGFRA and non-small cell lung carcinoma.